Manganese is extracted by heating manganese dioxide with aluminium powder. Which one of the following statements with regard to the reaction is correct?
[amp_mcq option1=”The reaction is exothermic.” option2=”The reaction is endothermic.” option3=”Manganese is produced as a solid.” option4=”Manganese is more reactive than aluminium.” correct=”option1″]
This question was previously asked in
UPSC CAPF – 2021
The reaction between manganese dioxide and aluminium powder is a type of thermite reaction. Thermite reactions are highly exothermic, releasing a significant amount of heat.
Thermite reactions involve the reduction of a metal oxide by a more reactive metal (typically aluminium). The general form is Metal Oxide A + Metal B → Metal A + Oxide of Metal B, where Metal B is more reactive than Metal A. These reactions are characterized by their high exothermicity, often producing molten metal.